... Auto Water Pumps apply for: AUDI A6(4A,C4) OEM NO.:077121004A,077121004G,077121004GX More applicant info, Pls click the pic. Car water pump ... description: A water pump is a belt driven device found in any car which transfers water from the radiator to ... As the car engine runs, the fan belt turns, turning the axle at the center of the water pump. The pump operates on ...